Wireless bluetooth single keyboard gaming keyboard for surface pro3/4/ 5/6/7, TYPE-C interface The product is shipped based on the color or size of the main image of the product page. Applicable model: Microsoft 12.2 inch surface pro3/pro4/pro2017/pro6/pro7Product size: 295*220*5mmCharging interface: TYPE-C interfaceProduct model specification:1. Bluetooth 3.0 standard interface2. Effective operating distance: 10 meters3. Modulation method: GFSK4. Working voltage: 3.0-4.2V5. Working current: less than 2.5mA6. Standby current: less than 0.3mA7. Sleep current: less than 40uA8. Charging current: more than 200mA9. Standby time: more than 100 days10. Charging time: 2-3 hours11. Lithium battery capacity: 350mAh/ 550mah (backlit model)12. Sustainable working hours: 35-100 hours13. Lithium battery life: 3 years14. Button force: 80 10g15. Button life: 5 million clicks16. Working temperature: -10 -55Steps to turn on Bluetooth:1. Turn on the Bluetooth switch on the tablet2. Long press the power switch on the keyboard, the power light flashes.3. "Bluetooth Keyboard" and four numbers will be displayed on the tablet screen.4. Corresponding to the prompt on the tablet screen, enter four numbers.5. Successfully connected with the wireless keyboard.Status display LED1. Power on and off and Bluetooth connection indicator: After pressing for three seconds, the indicator flashes, the keyboard enters the Bluetooth pairing mode, and automatically goes out after the connection is successful2. Uppercase and lowercase status indicator: the light is on when the keyboard is in uppercase input state3. Charging indicator4. Weak current indicator light: when the voltage is lower than 3.2V, the indicator light flashes, indicating that the charging cable needs to be connected for charging